Rice fertilization methods mainly include the following aspects:

Sufficient Base Fertilizer: Base fertilizer should be applied all at once during tillage, accounting for 70-80% of the total fertilizer application. The choice of base fertilizer can be determined based on soil conditions and rice variety. Generally, organic fertilizers, compound fertilizers, etc. can be used.

Early Tillering Fertilizer: Tillering fertilizer should be applied 10-15 days after transplanting to promote early and rapid tillering and ensure more tillers and more ears. The amount of tillering fertilizer applied generally accounts for 20-30% of the total fertilizer application.

Skillful Heading Fertilizer: Heading fertilizer should be applied 35-40 days after transplanting to meet the nutrient needs of the rice during the heading stage. The amount of heading fertilizer applied generally accounts for 10-20% of the total fertilizer application.

Supplementary Granular Fertilizer: Granular fertilizer should be applied around the time of heading to maintain high leaf photosynthetic efficiency and a longer functional period, thereby increasing seed set and grain weight. Granular fertilizer generally accounts for 5-10% of the total fertilizer application.

Note the timing and method of fertilization: Fertilization timing should be determined according to the rice's growth stage and climatic conditions. Generally speaking, base fertilizer should be applied all at once during tillage; tillering fertilizer should be applied 10-15 days after transplanting; heading fertilizer should be applied 35-40 days after transplanting; and granular fertilizer should be applied around the time the rice reaches heading. Fertilization methods include broadcasting, strip application, and hole application, depending on the fertilizer type and soil conditions.

These are basic fertilization methods for rice. I hope you find them helpful.